Hand grenade



G. A. SHAW.

HAND GRENADE.

APPLICATION FILED AUG-31, I917.

1,312,004. Patented Aug. 5, 1919.

' GEORGE A. SHAW, or TORONTO, ONTARIO, CANADA.

r I HAND-GRENADE- Specification of Letters Patent.

Patented Aug. 5, 1919.

Application filed August 31. 1917. Serial No. 189.226.

To. all whom it may concern:

Be it known that I, Lleutenant Colonel,

Gnonen ALEXANDER SHAW, a subject of the King of Great Britain, and resident of the city of Toronto, county of York, Province of Ontario, in the Dominion of Canada,

have invented certain new and usefulIm-- provements in Hand-Grenades, as described in the following specification and illustrated in the a'ccompanying'drawings part of the same. 1 The principal objects of the invention are, to devise a ,form of grenade which may be thrown with great accuracy and for a considerable distance and will be very deadly in its exploding effect, and further,

to provide a form of grenade which will be extraordinarily safe in handling and which may be manufactured atextremely low cost.

The principal features of the invention consist in the novel disk shape of the grenade and in the novel shape and arrangement of disk shaped projectiles arranged within the casing, and further, in the novel construction and arrangement of parts whereby the explosive charge is ignited and whereby the igniting means is maintained in safety. In the accompanying drawings Figure 1 is a perspective view of a hand grenade constructed according to my invention.

Fig. 2 is a' cross sectional view taken longitudinally through the center of the holder for the igniting charge.

,Fig. 3 is a cross sectional view theline a b of Fig. 2.

Fig. 4 is a perspective detail of the tubular member leading to the explosive containing chamber.

Fig. 5, is a perspective detail of the tubular container member 'for containing the primary exploding or igniting charge.

On reference to the accompanying drawings it will be seen that my improved grenade is in the form of a double convexed disk which may be made of anysuitable metal but is here shown formed of a pair of sheet metal members stamped into conical shape and secured together at the edges in a suitable seam or by electrical welding, brazing or otherwise to form a solid casing. A

through that form circular opening 2 is arranged in the edge of the disk'to receive a holder for the detonator or igniting charge. I

i The disk maybe made of cast metal of sufficient thickness for destructive purposes and in such construction it will merely be necessary to insert into the opening 2 a suitable plug carrying a fuse and detonator.

In the form herein shown a tube 3 is inserted in the opening 2 and secured to the inner end of this tube is'an inner casing 4 also of convexed disk form but of considerably smaller diameter than the outer casing. This inner casing fits into the apex of the inner side of the outer casing, at a point opposite to the opening 2 and is adapted to contain the charge of explosive.

The tube 3 is formed with a flanged outer end 5 which abuts the edge of the outer casing and saidflange is formed with a slot 6 in its periphery and a pair of notches 7 and 8 on its inner side, the notch 7 being arranged substantially in line with the edge of'the disk and the notch 8 arranged abou 90 from the notch 7.

A pair of V-shaped plates 9 of very thin flexible metal are secured at the small ends to the tube 3 adjacent to the head and extend longitudinally of said tube having hardened steel pins 10 secured adjacent to i V the free ends and extending-inwardly. The

tube 3 is formed with holes ll adapted toreceive the inner ends ofthe pins 10..

12 is a tube closed at one end and adapted to be inserted into the tube 3 having holes 13 arranged diametrically opposite and adapted to register with the holes 11 in the tube 3.' v

A pin 14 is secured inthe outer solid end of the inner tube 12 and: is provided with a looped portion 15 termin'atingin a hook end 16. The hook end is adapted to pass through the slot 6 in the flange 5 andupon the turning of the tube said hookmay be moved to enter either of the notches 7 or 8. The loop 15 is so arranged in relation to the holes 13 in the innertube that'when the hook enters the notch 8 the holes 13 are out of register with the holes 11 in the rigid tube 3 and when it is placed in the notch 7 the holes in the tubes are brought into which is placed therennprior to the inserr tion of the inner tub'e'and when the tube is inserted into the tube 3 the hook is; passed through the slot 6 compressing the spring. A slight; turn brings the hook into the notch; S, which is the safe position as the holes in the tubes are out of register and' the position is clearly indicated by the position of the loop 15. To bring theprimer into firing position the tube pressed. in to release the hook from the notch 8 and it is then turned until it enters the notch .7.

The'sp'ace between the inner and outer casings is filled withfa plurality of disk shaped'projectileseach formed of a convex disksha e with'a sharp cuttingedgev These disk shaped projectiles are inserted before the two sections of the outer casing are joined together and they fitloo'sely within the casing andla number of them engage the thin metal plates 9 carrying the pinslO and as these disks are'preferably made of steel or some other heavy metahthey will upon the jarring ofthe grenade withv sufiicient impact, spring the plates inwardly and force the pins through the holes in the tubes when they are in register and eflect the ignition or detonation of the priming charge. This sets ofl the main charge and the effect of the explosion is to split the grenade casing and scatter the sharp edged disks in every di rection. The effect of this I will be very deadly as the disks will have an extraordinary cutting-effect. V

lA- grenade oftheshape described may be grasped the hand; andthrown with great accuracyand on account'of its disk shape it may gbethrown; extraordinary distances.

Thefi 'o'rce ofthe impactiof the disk in striking theQground or {other objectrcauses the cone shaped disks to crowd against the plates 9 and the pins l0 entering the tube will effect the detonation of the exploding charge. f v I h r I have shown and described herein a par ticular mode ofexploding the; charge but other means for detenating may be readily adopted by those skilled in the art without departing from ;the"prin cipal features herein set forth, namely, thejpecu liar diskshape 9f the grenade, -the shape and arrangement of the disk shaped projectiles within the case and the safety feature, of the rotatable tube for holding 'the detonator., It is;within the purview' of the skilled mechanic to sub.- stitute'i for the meansffor detonating the charge herein described, mechanical means and a plurality of projectiles arranged loosely within said shell and adapted to operate said detonating means.

-2.-,A- hand grenade, comprising; anouter casing, an explosive containing receptacle arranged within said outer casing, a tubular member connected with said explosive. container and extending'outwar'dly through the outer casing, a holder adapted to be inserted intosaid' tubular member s and to contain a primary explosive, a plurality of projectil'eslooselyarranged within'th'e outer castheprim'ary explosive.

'3." A handigreiade, comprising, an outer casing, an explosive v container arranged within said "casing, a tubulariimember connected to said explosive container and extending through the outer casing and having an opening therethrough, a detonator holder adapted to be inserted 'in saidtubular member, means arranged upon said tubular member adapted to" be" projected inwardly through said opening to efl'ect the detonation of thee'xplosive charge, and a plurality of projectiles arranged loosely within the outer casing and adaptedto operate the means carried on the tubular member for detonating the charge; V H t I 4'. A hand grenade, comprising, an outer casing, an explosive container arranged within said casing, a tubular member con nected to said explosive container and extending through the outer casingiand having an opening throughthe side, a {flexible member secured to the outer side" of saidti bular memberand havinga projecting member adapted to extend through'the opening. in the side of the tube, a holderl adapted to contain a detonating charge and adapted to be inserted into'fsaid tubular member, said holder having an opening adapted to register withthe opening in the tubular member to allow of the assage of the projecting member carried on the flefxiblemember, means for holding the detonating holder with the opening in. register; with the opening in the tube and to "hold it in a position toj 'close said opening, and, a plura itylof. P e le oe l'a 'e i f the outer casing adapted to force the pr o jection on the flexible memberfthrou'ghthe openingsin saidjtube's. U I Aha-11d grenade comprising a casing,'a tubular member secured said casing and havingone opening thronglr'the casing,

ing i d a dapted'to effect the detonation of a flange arranged at the outer end of said tube having a slot therethrough and a pair of spaced notches in its inner face, a detonator tube adapted to be inserted in the former tube and having a hooked projection on its outer end adapted to pass through the slot in said flange and enter either of said Copies 0! this patent may be obtained for five cents each, by addressing the notches, spring means for holding the hooked projection in engagement With either of said notches, and means released upon the 10 turning of said inner tube adapted to effect the detonation of the detonator.

G. A. SHAW.

Commissioner of Patents,

Washington, D. 0. 

